fix a bug in pointwise mode of dygraph/similarity_net (#4339)
fix a bug in pointwise mode of dygraph/similarity_net (#4339)

* Update README.md (#4267)

* test=develop (#4269)

* 3d use new api (#4275)

* PointNet++ and PointRCNN use new API

* Update Readme of Dygraph BERT (#4277)

Fix some typos.

* Update run_classifier_multi_gpu.sh (#4279)

remove the CUDA_VISIBLE_DEVICES

* Update README.md (#4280)

* add similarity_net dygraph

* fix similarity_net dygraph

* fix bugs of dygraph/similarity_net

* Fix some bugs running on the GPU of dygraph/similarity_net

* fix a bug in pointwise mode of dygraph/similarity_net

Co-authored-by: pkpk <43bf3f21e126207e406c549cc52a2c600982132f@gmail.com>
Co-authored-by: Kaipeng Deng <7e2925840652780f99134a2de18108fa01356e58@baidu.com>

PaddlePaddle/models,PaddlePaddle/models,PaddlePaddle/models